first batch of links

README.md

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 # awesome-security-hardening
-A collection of awesome security hardening guides, tools and other resources
+
+[![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://github.com/sindresorhus/awesome)
+
+A collection of awesome security hardening guides, tools and other resources.
+This is work in progress: please contribute by forking, editing and sending pull requests.
+
+------
+
+# Security Hardening Guides
+
+## Hardening Guide Collections
+
+- [CIS Benchmarks](https://learn.cisecurity.org/benchmarks) (registration required)
+- [ANSSI Best Practices](https://www.ssi.gouv.fr/en/best-practices/)
+- [NSA Security Configuration Guidance](https://apps.nsa.gov/iaarchive/library/ia-guidance/security-configuration/index.cfm?PAGE=1&itemsQty=ALL)
+- [DISA Security Technical Implementation Guides (STIGs)](https://iase.disa.mil/stigs/Pages/index.aspx)
+- [Australian Cyber Security Center Publications](https://www.cyber.gov.au/publications)
+- [FIRST Best Practice Guide Library (BPGL)](https://www.first.org/resources/guides/)
+
+## GNU/Linux
+
+- [ANSSI - Configuration recommendations of a GNU/Linux system](https://www.ssi.gouv.fr/en/guide/configuration-recommendations-of-a-gnulinux-system/)
+- [nixCraft - 40 Linux Server Hardening Security Tips (2019 edition)](https://www.cyberciti.biz/tips/linux-security.html)
+
+### Red Hat Enterprise Linux - RHEL
+
+- [A Guide to Securing Red Hat Enterprise Linux 7](https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html-single/security_guide/index)
+
+### SUSE
+
+- [SUSE Linux Enterprise Server 12 SP4 Security Guide](https://www.suse.com/documentation/sles-12/singlehtml/book_security/book_security.html)
+
+### Ubuntu
+
+
+## Windows
+
+## macOS
+
+## Network Devices
+
+## Virtualization - VMware
+
+- [VMware Security Hardening Guides](https://www.vmware.com/security/hardening-guides.html)
+
+## Services
+
+### SSH
+
+- [NIST IR 7966 - Security of Interactive and Automated Access Management Using Secure Shell (SSH)](https://nvlpubs.nist.gov/nistpubs/ir/2015/NIST.IR.7966.pdf)
+- [ANSSI - (Open)SSH secure use recommendations](https://www.ssi.gouv.fr/en/guide/openssh-secure-use-recommendations/)
+- [Linux Audit - OpenSSH security and hardening](https://linux-audit.com/audit-and-harden-your-ssh-configuration/)
+
+### Web Servers
+
+### Mail Servers
+
+### FTP Servers
+
+### Database Servers
+
+### LDAP
+
+# Tools
+
+## Tools to check security hardening
+
+- [Lynis](https://cisofy.com/lynis/)
+
+## Tools to apply security hardening
+
+# Books